HP 5245L Service Manual

Model
5245L
Table
of
Contents
TABIE
OF CONTENTS
Section
I GENERAL
INFORMATION
1-1.
Introduction
1-6.
Instrument
Identification
1-9:
Installation
and Operation
ru PERFORMANCE
CHECK
ry
REPLACEABLE
PARTS
4-1.
Introduction
4-4.
Ordering Information
.
V OPTIONS
AND MANUAL CHANGES
5
- 1.
Options
5-3.
Option 02
+1248 BCD Code
5-5.
Option 03
-1248
BCD Code
5
-9.
Specials
5-13. Manual
Changes
PRINCIPLES
OF
OPERATION . . .2-I
2-1.
Introduction
. .2-l
2-3.
The Diode.
. .2-L
z-lL.
TheTransistor .....2-2
2-25. Basic
Operation of
Decimal
Counter
or
Decade
Divider . .2-4
2-36.
Basic
Counter
Functions . . .2-9
2-44.
Time Sequence .2-10
2-4g.
OveralldounterOperation
.....2-tl
2-5L.
Input Switch Assembly
A1
.z-tl
2-54.
'
Time-Base Switch Assembly
A2
.2-13
2-56. Function
Switch
Assembly A3
. .
.2-13
2-58. Mode
Switch
Assembly
A4
.2-L3
2-60.
Output Switch
Assembly A5 2-L4
2-62. PowerSupply: Rectifier
Assembly4.6;
Regulator
AssemblyA?
.2-14
2-70.
Decimal
Point
Assembly A8
. . .z-ts
2-73.
Measurement
Units
Assembly
A9
2-15
2-76. Low Frequency
Decimal
Counter Assembly A10-A14
. .
.2-15
2-78.
5 MHz
Decimal Counter
Assembly
A15, A16
. 2-L5
2-80.
50
MHz
Decimal
Counter Assembly A.1?
.
.
.
.z-Ls
2-84.
50
MHz
Readout
Assembly A18
.
.2-18
2-88.
Input Amplifier
Assembly A19-A20
.
. .2-L8
2-91.
Function
Control
Assembly
A21
.z-tg
2-95.
Gate
Control
Assembly A22
. . .2-20
2-99.
Sampling
Control
Assembly
A23
.2-21
2-105.
Oscillator and Oven
A24,
A25, A26
.
. .2-22
z-LlL.
Multiplier
Assembly A27
.2-22
2-113.
5
MHz
Decade Divider
Assembly
A2B.
.2-22
2-tt5.
Low-Frequency
Decade Divider Assembly
A29-A34 2-22
2-Lt7.
Time-Base Control Assembly
A35
.
. .2-23
Page
. .
.1-1
. .
.1-1
. .
.1-1
. . .1-1
.3-1
.4-t
.4-1
.4-l
.
5-1
5-1
5-
14.
5
-16.
6-18.
6-
19.
6
-21.
6-23.
Current
Instruments
OIder Instruments
.
5-1
. 5-1
.5-1
.6-1
.5-1
.6-1
.6-1
.6-1
.
6-1
.6-1
.6-2
.6-2
.6-2
.6-2
.6-2
.
6-3
. 6-3
.
6-3
. 6-3
.6-3
.6-3
.7-1
VI ADJUSTMENT
AND
TROUBLESHOOTING.
. . .
6-1.
Introduction
6-3.
Mai.ntenance
6-?. Test Equipment.
.
.
6-9. Assembly
Connection
Identification
6-11.
Instrument
Cover
Removal
6-13.
Assembly Location
6-15. Printed
Circuit Component Replacement
6-17.
Adjustments
.
Regulator Assembly
A?
.
.
. . .
Input
Amplifier
A19
Ration Input
Amplifier
A20
Function
Control
y',2l.
.
6-24.
Troubleshooting
6-25.
Troubleshooting
Aids
6-32.
Troubleshooting
Procedure
CIRCUIT DIAGRAMS
02349-1
IIl

HP 5245L Specifications

General

Brand	HP
Model	5245L
Category	Cash Counter
Language	English